Linear low capacitance overvoltage protection circuit
US7515391B2 · kind B2 · utility
4Cited by
24References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Oct 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A bipolar semiconductor overvoltage protection circuit presents less capacitance to a communication line. The overvoltage protection circuit includes an overvoltage protection device that is biased with a voltage to not only reduce the capacitance thereof, but also to reduce the change in capacitance as a function of frequency. Changes in communication line voltages thus change the capacitance of the overvoltage protection device less, resulting in the ability to allow the transmission of high capacity data protocols with reduced error rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.